Review on ACDelco GM Original Equipment 15-11006: Engine Coolant Thermostat & Housing Assembly – Efficient Performance and Durability by Meech Elliott

Had to replace this thermostat/housing assembly to fix a repeating low coolant temp code. As other reviews say, poorly designed access gives you multiple options to do this. I decided to remove the battery, alternator and engine lift bracket for access. There are a few AC lines that get in the way, but they can be bypassed. Make sure the alternator bottom bolt is inserted into it before it is fully seated, otherwise it will not be able to slide over the A/C line. He brought a temperature gauge with him. back 210 degrees from 160. There are some good videos on U-Tube. Note that on newer 2006 and later models the coolant temperature sensor is located on the passenger side of the engine block and is very inaccessible. Instead of the sender, I had a metal coolant line that led to radiator 2, I did not replace the sender